9.
Now connect the
black negative
(-)
cable
to the good battery's
negative
(-)
terminal.
Don't let the other end touch anything until the next
step. The other end of the negative cable
doesn't
go to
the dead battery.
It
goes
to
a heavy unpainted metal part
on the engine
of
the vehicle with the dead battery.
10.
11.
Attach the cable at least
18
inches
(45
cm) away
from the dead battery, but not near engine parts that
move. The electrical connection is just as good
there, but the chance of sparks getting back to the
battery is much less.
Now start the vehicle with the good battery and run
the engine for a while.